Query about non-archival workshop at CVPR-2026 [R]

My paper was recently accepted to a workshop at CVPR-2026 as non-archival acceptance. Is it mandatory for me to register to the conference as I won't be able to attend(visa issues), but my friend will be there in the conference and can present on my behalf. I have few questions regarding my situation: Do I need to finish author registration for a non-archival workshop? Is it mandatory for me to have a poster in the conference venue? Will my paper get removed from the workshop website(where they list out the